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-rw-r--r--changelog.md1
-rw-r--r--script/core/signature.lua44
-rw-r--r--script/parser/ast.lua12
-rw-r--r--script/parser/grammar.lua12
-rw-r--r--test/signature/init.lua45
5 files changed, 88 insertions, 26 deletions
diff --git a/changelog.md b/changelog.md
index a73512e7..2ebb2f9e 100644
--- a/changelog.md
+++ b/changelog.md
@@ -3,6 +3,7 @@
## 2.0.3
* `CHG` improve memory usage
* `FIX` some dialog boxes block the initialization process
+* `FIX` [#565](https://github.com/sumneko/lua-language-server/issues/565)
## 2.0.2
`2021-6-23`
diff --git a/script/core/signature.lua b/script/core/signature.lua
index 8de1c374..76189fb7 100644
--- a/script/core/signature.lua
+++ b/script/core/signature.lua
@@ -4,6 +4,7 @@ local vm = require 'vm'
local hoverLabel = require 'core.hover.label'
local hoverDesc = require 'core.hover.description'
local guide = require 'parser.guide'
+local lookback = require 'core.look-backward'
local function findNearCall(uri, ast, pos)
local text = files.getText(uri)
@@ -71,7 +72,7 @@ local function makeOneSignature(source, oop, index)
}
end
-local function makeSignatures(call, pos)
+local function makeSignatures(text, call, pos)
local node = call.node
local oop = node.type == 'method'
or node.type == 'getmethod'
@@ -85,13 +86,26 @@ local function makeSignatures(call, pos)
end
end
for i, arg in ipairs(args) do
- if arg.start <= pos and arg.finish >= pos then
+ local start = lookback.findTargetSymbol(text, arg.start - 1, '(')
+ or lookback.findTargetSymbol(text, arg.start - 1, ',')
+ or arg.start
+ if start > pos then
+ index = i - 1
+ break
+ end
+ if pos <= arg.finish then
index = i
break
end
end
if not index then
- index = #args + 1
+ local backSymbol = lookback.findSymbol(text, pos)
+ if backSymbol == ','
+ or backSymbol == '(' then
+ index = #args + 1
+ else
+ index = #args
+ end
end
else
index = 1
@@ -112,38 +126,18 @@ local function makeSignatures(call, pos)
return signs
end
-local function isSpace(char)
- if char == ' '
- or char == '\n'
- or char == '\r'
- or char == '\t' then
- return true
- end
- return false
-end
-
-local function skipSpace(text, offset)
- for i = offset, 1, -1 do
- local char = text:sub(i, i)
- if not isSpace(char) then
- return i
- end
- end
- return 0
-end
-
return function (uri, pos)
local ast = files.getState(uri)
if not ast then
return nil
end
local text = files.getText(uri)
- pos = skipSpace(text, pos)
+ pos = lookback.skipSpace(text, pos)
local call = findNearCall(uri, ast, pos)
if not call then
return nil
end
- local signs = makeSignatures(call, pos)
+ local signs = makeSignatures(text, call, pos)
if not signs or #signs == 0 then
return nil
end
diff --git a/script/parser/ast.lua b/script/parser/ast.lua
index bd8a66cf..e92e3e16 100644
--- a/script/parser/ast.lua
+++ b/script/parser/ast.lua
@@ -6,6 +6,7 @@ local mathType = math.type
local tableRemove = table.remove
local pairs = pairs
local tableSort = table.sort
+local print = print
_ENV = nil
@@ -1925,6 +1926,17 @@ local Defs = {
}
}
}
+ end,
+ CallArgSnip = function (name, tailStart, tailSymbol)
+ PushError {
+ type = 'UNEXPECT_SYMBOL',
+ start = tailStart,
+ finish = tailStart,
+ info = {
+ symbol = tailSymbol,
+ }
+ }
+ return name
end
}
diff --git a/script/parser/grammar.lua b/script/parser/grammar.lua
index 01756c2a..2c046f0e 100644
--- a/script/parser/grammar.lua
+++ b/script/parser/grammar.lua
@@ -304,6 +304,13 @@ MustName <- Name / DirtyName
DirtyName <- {} -> DirtyName
]]
+grammar 'DocType' [[
+DocType <- (!%nl !')' !',' DocChar)+
+DocChar <- '(' (!%nl !')' .)+ ')'?
+ / '<' (!%nl !'>' .)+ '>'?
+ / .
+]]
+
grammar 'Exp' [[
Exp <- (UnUnit BinUnit*)
-> Binary
@@ -332,9 +339,12 @@ Single <- !FUNCTION Name
Suffix <- SuffixWithoutCall
/ ({} PL SuffixCall DirtyPR {})
-> Call
-SuffixCall <- Sp ({} {| (COMMA / Exp->NoNil)+ |} {})
+SuffixCall <- Sp ({} {| (COMMA / CallArg)+ |} {})
-> PackExpList
/ %nil
+CallArg <- Sp (Name {} {'?'? ':'} Sps DocType)
+ -> CallArgSnip
+ / Exp->NoNil
SuffixWithoutCall
<- (DOT (Name / MissField))
-> GetField
diff --git a/test/signature/init.lua b/test/signature/init.lua
index 931a8d73..40fb33dc 100644
--- a/test/signature/init.lua
+++ b/test/signature/init.lua
@@ -242,3 +242,48 @@ function f(x: table<number, string>, y: any, z: any)
]],
arg = {12, 35},
}
+
+
+TEST [[
+local function x(a, b)
+end
+
+x( aaaa $, 2)
+]]
+{
+ label = "function x(a: any, b: any)",
+ arg = {12, 17},
+}
+
+TEST [[
+local function x(a, b)
+end
+
+x($ aaaa , 2)
+]]
+{
+ label = "function x(a: any, b: any)",
+ arg = {12, 17},
+}
+
+TEST [[
+local function x(a, b)
+end
+
+x(aaaa ,$ 2)
+]]
+{
+ label = "function x(a: any, b: any)",
+ arg = {20, 25},
+}
+
+TEST [[
+local function x(a, b)
+end
+
+x(aaaa , 2 $)
+]]
+{
+ label = "function x(a: any, b: any)",
+ arg = {20, 25},
+}